For this and the other 3 “House” trophies, you’re basically going to need to start a new game, and get to a certain chapter in Hogwarts Legacy under one house. And then rinse and repeat for the other 3 houses.

First things first, let’s talk about how to get into each house. This happens after the prologue level and requires certain choices to be made. The game will then recommend you a house based upon your suggestions. For Ravenclaw, for instance, you need to answer Curiosity to the second question.

It doesn’t matter which answer you choose to the very first question, the important thing is the second question, which has four possible answers. Harry Potter fans will recognise the four answers listed as the defining trait of each of the Hogwarts Houses.

Daring - Gryffindor
Curiosity - Ravenclaw
Loyalty - Hufflepuff
Ambition - Slytherin

However, it doesn’t actually matter if you accidentally choose the wrong answer. The sorting hat will suggest a house, at which point you can press in order to pick a different house entirely. At this point, you’re taken to a page with the four house emblems to choose from, and can freely pick the house that you’d like to be.

Once you’ve chosen your house, you then need to complete the “Jackdaw’s Rest” main quest - that’s the 15th main quest - and it’ll unlock when you’ve made it into the Map Chamber at the end of said quest. It’s the same across all the playthroughs, it’s just the house that makes the difference here. It’s probably going to take you a few hours to get through a new playthrough up until this point, but just set the game to ‘Story’ and make a beeline for every main quest when it crops up and it shouldn't take you too long.